Motorola MVME135 User Manual page 90

SUPPORT INFORMATION
TAB LE 5-1. CONNECTOR Pl INTERCONNECT SIGNALS (cant.)
Pin
Number
c'
m
Cll
Cl'
Signal
Mnemonic
GND
SYSFAIl*
BERR*
SYSRESET*
Cl3 LWORO*
C14
A.M5
C15-C30 A23-A08
C31 +12V
C32 +5V
Signal Name and Description
GROUND
SYSTEM FAILURE - An open-collector driven signal
that indicates a failure has occurred in the
system . SYSFAIL* may be generated by any module
on the VMEbus.
BUS ERROR - An open-collector driven signal
generated by a slave. BERR* indicates that an
unrecoverable error has occurred and the bus
cycle must be aborted.
SYSTEM RESET - An open-collector driven signal
which, when low, will cause the system to be
reset.
l ONGW ORD - A three-stilte driven signal specifying
that the cycle is a byte/word transfer (when high)
or a 10ngword transfer (when low).
ADDRESS MODIFIER (bit 5) - Same as AM4 on pin A23.
ADDRESS BUS (bits 23-08) - 16 of 31 three-state
input lines that specify an address in the memory
map.
+12 Vdc POWER - Used by system logic circuits.
+5 Vdc POWER - Used by system logic circuits.
5- 5